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Old 03-09-2013, 11:23 PM   #1
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Default Piecing together a turbo kit, any input?

Okay so I've been reding a lot about turbos for the last few months on this site, some great build threads (degreddified sunburst was extremely informative) and I've decided I want to piece together a nice little turbo system. I had a coldside sc 96 that ended up making 250+whp and it was fun but the intense dropoff at the top end left me wanting so much more. Right now I'm on a stock 94 engine with 250k miles and its really strong, oil changes every 3k, preventative maintence, etc. I'm on a tight budget and would like to do it as quick as possible (anxious to get boosted) but I'm willing to wait a little longer to get funds together and do it right. I'm trying to find a good mani/dp for cheap but the best I can find is thre begi mani for 400 and dp 305 :( id rather not spend that much but I with they had the cast mani for the 1.8 on ebay like they do the 1.6. Im looking to make 225-250whp for now with the possibility of easily bumping up to around 275-300 with some engine work in the future. I've been looking at these
http://www.ebay.com/itm/GODSPEED-T3T...4b73a7&vxp=mtr
http://www.ebay.com/itm/GSP-UNIVERSA...12a19e&vxp=mtr
http://www.ebay.com/itm/GODSPEED-GSP...6714b2&vxp=mtr

Any info on reliablility, hp posibilities, spool time, if anyone is running any of these, etc. I know dustinb was running a similar turbo but the link he had doesn't work anymore. Thanks guys!

Last edited by 94LagunaR; 03-10-2013 at 06:20 PM.
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Old 03-09-2013, 11:26 PM   #2
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Also this is going to be a dd only, might take it to the autocross every now and then, and maybe learn to drift but only a dd until I get some more free time
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Old 03-09-2013, 11:51 PM   #3
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If you are putting one together on a budget it is best to just shop around the parts section here and slowly piece together a quality setup.

Last edited by latena; 03-18-2013 at 12:33 AM.
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Old 03-10-2013, 12:41 AM   #4
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My advice: Buy low & sell high.
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Old 03-10-2013, 01:11 AM   #5
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Quote:
Originally Posted by latena View Post
If you are putting one together on a budget it is best to just shot around the parts section here and slowly piece together a quality setup.
Thats the plan amd ill look on cr.net and m.net. It seems like I search on a subject for a few days and when I cant find exactly what im looking for a start a thread and then not 5 minutes later I find a thread with almost exactly all the info I need
https://www.miataturbo.net/build-thr...h-build-63204/
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Old 03-10-2013, 01:28 AM   #6
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Good read, would read again.

Godpseed kits are the ****, i hear they no hit the block. With your plan you might be better off going with an electric supercharger though.
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Old 03-10-2013, 04:23 AM   #7
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Quote:
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Good read, would read again.

Godpseed kits are the ****, i hear they no hit the block. With your plan you might be better off going with an electric supercharger though.
They "no hit the block?" What is this supposed to mean? I also read about complications with the churbo's dp flange. Does this apply to the godspeed or do they match up with garretts dp flange?
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Old 03-10-2013, 04:31 AM   #8
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They are garbage that rarely fits right and worse yet crack soon after installation. There is a reason why begi and FM charge 300 bucks per manifold and 200something for downpipes.

Read the stickies man thats why they are there. Theres tons of information at your finger tips.
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Old 03-10-2013, 06:25 PM   #9
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Quote:
Originally Posted by triple88a View Post
They are garbage that rarely fits right and worse yet crack soon after installation. There is a reason why begi and FM charge 300 bucks per manifold and 200something for downpipes.

Read the stickies man thats why they are there. Theres tons of information at your finger tips.
Sorry, I re-read my original post and the way I worded it made it sound like I was thinking of getting an ebay mani so just to clarify I am NOT even considering getting an ebay mani unless of course they made a cast one for the 1.8, like I mentioned earlier. When I said I was thinking godspeed I meant for the turbo itself, sorry I should have clarified, but I edited my first post. Anyways, I was asking for input on the godspeed turbos, I have read mostly good things about them on here. As for the mani/dp I'll lurk these forums for a while to see if I can find something I like, if not I'll probably just go with the begi mani/dp. I've read a lot about the A/R numbers and turbo specs but its still kind of blurry to me (guess im a little slow lol) even though I'm usually pretty good with math and numbers. I saw a link to a stealth site that was supposed to clarify what all those numbers mean but it didnt help a bunch, I'm going to end up buying Corky Bells Maximum Boost and read that a few times, hopefully it will clarify some things for me
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Old 03-10-2013, 06:48 PM   #10
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I would run a chinacharger any day of the week because I'm a cheap ***, but at the same time, with the plethora of good, used OEM turbos available that don't use the old T3 flange, it seems like a waste of time.

SR20 turbos are popular and plentiful. Myself and a few others have used WRX TD04s with great success. When I can buy a 20k mile OEM turbo for <$125, seems like a good way to go.

There are more turbo builds on this site than you can shake a stick at, read other peoples builds and choose your path.
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Old 03-17-2013, 10:54 PM   #11
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Okay, so I found a local miata guy. He has an 03 nb and a turbo kit for it but he opted not to go turbo so hes selling it. Here's what it includes
Begi S4 mani/ no dp
Godspeed T25 (SR20) turbo
FMIC and piping
HKS bov
oil lines and tap
FM Voodoo box
I'm just assuming that the mani will fit my '94 since they both have a 1.8, but please correct me if im wrong

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Old 03-17-2013, 11:50 PM   #12
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hmm if ure sure its an s4 mani theres a dp being sold on the classifieds that should fit.
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Old 03-17-2013, 11:52 PM   #13
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Old 03-18-2013, 12:07 AM   #14
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I haven't looked at it yet, going to check it out friday or saturday but ill definitely make sure its a begi before i shell out the money. I've never seen either in person but im sure it will be obvious whether or not its a quality piece of a thin piece of sheet metal lol. A question I've always wanted to know is, why do I always see mani/dp sold as sets. Do they have to match and why is that?
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Old 03-18-2013, 12:23 AM   #15
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Expect not to use the voodoo box... I'm guessing u're planning on doing it properly and not using 12411376 piggybacks to make it....run less shitty.

You can call Stephanie from begi and ask for sizes of the tubes, and other marks you can look at to ensure you're getting an S4 manifold and not the ebay ones.
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Old 03-18-2013, 12:28 AM   #16
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I was actually going to use it and start off with low 5-6 psi and turn up to 8-9 maybe a little later and eventually go to MS, but im blowing a good portion of my money on the kit right now (poor 19 yr old here) lol me and my dad had a BRP coldside kit with ELF piggyback and that was it and it ended up making 250+ at its best but we turned it down for autox and better street driveability. I believe there was also a chip soldered into the stock ecu that changed the redline but idk if it did anything other than that
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Old 03-18-2013, 03:38 AM   #17
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Chip, u mean a crystal? Crystal leans out the afrs further so thats that.
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Old 03-18-2013, 11:31 AM   #18
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I'm not exactly sure what it was, the guy who owned it before put it in. If running 5-7psi, would I need anything for fuel other than the voodoo. What about timing?
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Old 03-18-2013, 12:05 PM   #19
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Make sure you get a receipt from him from BEGI for the s4 manifold. Honestly you should spend the money on a MS now, learn to tune it, then go turbo after you know how to tune. Doing it the other way will cause more long term headaches.
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Old 03-18-2013, 12:35 PM   #20
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Quote:
Originally Posted by shuiend View Post
Make sure you get a receipt from him from BEGI for the s4 manifold. Honestly you should spend the money on a MS now, learn to tune it, then go turbo after you know how to tune. Doing it the other way will cause more long term headaches.
That was my original plan but I got a really good deal on this stuff so I can't pass it up. And if it's really a BEGI mani then there is no way I could pass it up
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